As of December 7, 2015 ZMDI is Now IDT ZMDI is proud to have joined with IDT and together we look forward to an even greater future! Brief history of ZMDI: ZMDI is a global supplier of analog and mixed-signal semiconductor solutions for automotive, industrial, medical, information technology and consumer applications. These solutions enable our customers to create the most energy-efficient products in power management, lighting and sensors. For over 50 years, ZMDI has been globally headquartered in Dresden, Germany. With over 400 employees worldwide, ZMDI serves its customers with sales offices and design centers throughout Germany, Italy, Bulgaria, China, Japan, Korea, Taiwan and the United States.